Add Pause and Resume to Web TTS & Extension TTS APIs

chrome/browser/speech/tts_chromeos.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/speech/tts_extension_loader_chromeos.h"
 #include "chrome/browser/speech/tts_platform.h"
 
 // Chrome OS doesn't have native TTS, instead it includes a built-in
 // component extension that provides speech synthesis. This class includes
 // an implementation of LoadBuiltInTtsExtension and dummy implementations of
@@ skipping 16 matching lines @@
       const std::string& lang,
       const VoiceData& voice,
       const UtteranceContinuousParameters& params) OVERRIDE {
     return false;
   }
 
   virtual bool StopSpeaking() OVERRIDE {
     return false;
   }
 
+  virtual void Pause() OVERRIDE {}
+
+  virtual void Resume() OVERRIDE {}
+
   virtual bool IsSpeaking() OVERRIDE {
     return false;
   }
 
   virtual void GetVoices(std::vector<VoiceData>* out_voices) OVERRIDE {
   }
 
   // Get the single instance of this class.
   static TtsPlatformImplChromeOs* GetInstance();
 
  private:
   TtsPlatformImplChromeOs() {}
   virtual ~TtsPlatformImplChromeOs() {}
 
   friend struct DefaultSingletonTraits<TtsPlatformImplChromeOs>;
 
   DISALLOW_COPY_AND_ASSIGN(TtsPlatformImplChromeOs);
 };
 
 // static
 TtsPlatformImpl* TtsPlatformImpl::GetInstance() {
   return TtsPlatformImplChromeOs::GetInstance();
 }
 
 // static
 TtsPlatformImplChromeOs*
 TtsPlatformImplChromeOs::GetInstance() {
   return Singleton<TtsPlatformImplChromeOs>::get();
 }